A story about young love, first love, true love, timeless love, and the power of love letters. Mark and Bethany are two mismatched high school seniors in a new relationship. It's doomed to fail. Mark has adored Bethany since middle school, and she's finally giving him a chance. Only, he's clumsy at romance and knows he'll lose her because of it. Bethany thinks Mark is sweet. Only, she's afraid to commit her whole heart to him because he's going into the army and she's headed off to college. Fifty years earlier, a boy and a girl from the same high school shared an amazing love story. They have now returned as ghosts and are interfering in Mark and Bethany's relationship. Who are they? Why do they care what happens to Mark and Bethany?